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The Shield-backed Trapdoor Spider (Idiosoma nigrum) belongs to the suborder Mygalomorphae, commonly known as “Trapdoor” and “Funnel-web” spiders. They are primarily terrestrial burrowing spiders that occasionally make tubular silk nests on tree trunks. Mygalomorphs are able to persist in small isolated areas due to their low dispersion powers, long life cycle and sedentary life style (Main, 1987a).

eucalypt; habitat; woodland